Home / 21,414.43-29,551.95-11,983

Finding the Fourth Proportional to 21,414.43, 29,551.95 and 11,983

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Solution

The fourth proportional to 21,414.43, 29,551.95 and 11,983 is: 16,536.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,414.43 : 29,551.95 = 11,983 : x
  2. Step 2: Convert to fraction form
    21,414.43/29,551.95 = 11,983/x
  3. Step 3: Cross multiply
    21,414.43x = 29,551.95 × 11,983
  4. Step 4: Simplify right side
    21,414.43x = 354,121,016.85
  5. Step 5: Solve for x
    x = 354,121,016.85/21,414.43
  6. Step 6: Final answer
    x = 16,536.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.